194 Mr. E. Saunders' Synopsis of 



looked at laterally, is bidentate, the upper tootli narrowly tri- 

 angular, the lower one longer and spiniform ; beneath largely 

 punctured, each segment fringed with pale hairs at the apex; apex 

 of the 4th narrowly emarginate in the centre, with a slightly pro- 

 jecting angle on each side of the emargination ; 6th just visible in 

 the middle, where it is produced into a corneous lobe (for genitalia 

 see PL VIII., fig. 4). Legs clothed with brownish grey hairs ; all 

 the calcaria sharp and black. 



J . Very like the ^ , but with the abdomen conical and nar- 

 rowly pointed at the apex, shining, with the exception of the apical 

 segment, its basal segment with a tuft of pale whitish hairs on 

 each side ; 2nd to 5th segments each with an apical fringe of pale 

 hairs ; 2nd and 3rd deeply impressed across the middle ; basal seg- 

 ment and 2nd segment, above the central impression, closely and 

 largely punctured, the rest very remotely ; apical segment longi- 

 tudinally carinated, dull, finely punctured, constricted towards the 

 middle, then narrower to the apex ; beneath with the 4th seg- 

 ment much more finely punctured than the 3rd ; 5tli entire at 

 the apex, with the puncttu'ation hardly visible ; 6th longer than the 

 dorsal valve, carinated down the centre, constricted near the apex, 

 with its sides simply sinuate. Length, 12 — 13 mm. 



Hah. Local. Chobham ; Wakefield, Yorkshire ; North 

 Devon ; Norwich ; Yarmouth ; &c. 



3. Coelioxys rufescens, Lep. (PI. VIIL, fig. 3). 



Lep., Encycl. Meth., x., p. 109; Smith, Cat. Brit. 

 Hym., 2nd ed., p. 145 ; var. := umhrina, Smith. 



Black, rugosely punctured; abdominal segments with continuous 

 bands in the $ , subcontinuous in the J , that of the 2nd and 3rd 

 in this sex being very narrowly interrupted in the centre ; 5th 

 segment in the ^ with a lateral tooth at the apex ; 5 with the 6th 

 ventral segment triangularly truncate ; calcaria piceous in both 

 sexes. 



Very like the preceding, but generally larger in the 

 typical form ; the smaller form, however, which was 

 called by F. Smith umhrina, can only be distinguished by 

 structural characters. 



^ . Eather less densely pubescent than the preceding ; basal 

 segment of the abdomen clothed with hairs only on the sides ; 5th 

 segment without an apical band, and with a lateral tooth at the 

 aj)ex ; 4th ventral segment emarginate in the centre, the emargi- 

 nation slightly wider than in quadridentata (for genitalia see 

 PI. VIII., fig. 3). 



